Appearance
''Solidago gigantea'' is a herb up to 200 cm tall, sometimes spreading by means of underground rhizomes. They often grow in clumps, with no leaves at the base but numerous leaves on the stem. At the top, each stem produces a sizable array of many small flower heads, sometimes several hundred. Each head is yellow, containing both disc florets and ray florets.
Status
''Solidago gigantea'' is highly invasive throughout Europe and Asia. In its non-native range, it exerts a negative impact on native communities by decreasing species richness and diversity, apparently due to its intense competitive effects, rapid growth or polyploidization.In the non-native, European range several management option are applied, such as periodical flooding, mowing, mulching, grazing or herbicide to reduce the negative impact of the species on native biodiversity.
Habitat
''Solidago gigantea'' is found in a wide variety of natural habitats, although it is restricted to areas with at least seasonally moist soils.Cultural
''Solidago gigantea'' is the state flower of Kentucky and Nebraska.References:
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